Spontaneous emission in a quantum system driven by a resonant field beyond the rotating wave approximation

Abstract

Quasi-stationary states of the quantum system in the driving resonant field are considered without rotating wave approximation. Conditions under which the spontaneous emission could be suppressed in this system are investigated in the special case when the frequency of the driving field is essentially less than the frequency of spontaneous emission. It is shown that the characteristic parameters of the effect are substantially changed in comparison with the results corresponding to RWA. The real physical system for which the considered effects could be observed is described.

Exact solution for the quantum Rabi model with the $\boldsymbol{\mathsf{A}}^{2}$ term

“…Presently there exist systems (ion bound to the cavity [13,14], super-conducting qubit [15][16][17], polaritons [18]) that provide the strong interaction [19][20][21][22][23] between an atom and the field, which corresponds to the situation when the dimensionless coupling constant f of the atom-field interaction in QRM reaches values of the order of unity [24][25][26]. This motivates both experimental and theoretical investigations of physical effects appearing in this fully quantum regime [6,24,[27][28][29][30][31].…”